Scrubbing-machine



" M. P. PREGLER.

'SCRUBBING MACHINE.

Patented Feb. 3,1920.

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a ICHEALr. PREG ER;or crrrcneo;.riirirnors. 1

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T alliwhom it may concern. i

Be-it known that I, MICHEAL P. PnEeLEn,

a citizen of the United Statesres'idingat Chicago, in the county of Cook and State of Illinois, have invented certain new and userul Improvements in scrubbing-'Machines, of which the following is a specification.

This invention. relates toscrubbers, and more especially it is a scrubbing machine wherein the brush is rotated on its own upright axis as it is drawn along the surface than Fig.

being scrubbed, and wherein water is applied to and through the brush to said surface. Whlle I have described and illustrated the device as employed for the purpose of scrubbing, itis quite obvious that it could be used for other purposes such as sweeping, dry-cleaning, and perhaps waxing floors, or cleaningthe same with other liquids than water, and I- reserve the widest latitude in the uses to which this machine may be put.

a Details of construction will be found in the following specification, and reference is made to the accompanying" drawings",

wherein Figure l is aside elevation of this as paratus complete,

Fig. 2 is an enlarged detail of the connection between the main shaft or axle and the center of the scrubber,

Fig. 3 is a rear elevation on a larger scale 1 with the scrubber in vertical section, V

Fig. 4 is a plan view of the scrubber.

Wheels 1 are mounted rigidly on a main shaft or axle 2 journaled in bearings 3 in aframe 4: from which a'yoke 5 leads for-. ward to a handle 6, the yoke being preferably supported or braced asat 7 as seen in Fig. 1. A tank or reservoir 8 is carried on the frame and has an outlet 9 controlled by a hand valve'as shown. A driving bevel gear 10 is mounted fast on the axle near the center of the frame. From a plate 11 secured beneath the center of the frame depends an upright hanger 12 preferably having a bearing 13 for the axle 2-,and itslower end is threaded as at 14.- to receive a nut 15 lar 19 carrying a bevel gear 20 which meshes with the driving gear .10, and ball bearlngs 21 may be employed to reduce friction as v 1 i Specification of'Letters Paltent "Patented Feb g, Application riled i-my 20,1918. "st-taint. 218,257.

of the hanger which therefore'becomes its.

-su}: port. -Betweensaid, plates 17 and 18.

are clamped the inner ends of radiating arms '22, preferablyfour in number and of chanthis structure rotates around the lower end neled cross section as shown, and the outer ends of these arms are united by an upright annular band or ring 26 of sheet metal whose lower edge rests on the ground or floor or stands very near the'same, and whose purposeiis to prevent splashing. This baud or ring may be removed if desired, 2

but I prefer to employ it. Thus is built up a spider structure which supports the brush vproper,,tl1e elements illustrated in" drawn forward by its handle, the rotation of the axle automatically causes the rotation of the spider.

The scrubbing brush is by preference made. in separate elements. :Each has a backpiece 25 fitted adjustably into the channel of one of thearms 22, and bristles-26 de pending from said piece. The latter carries on its upper side at two or more points socket plates 27 within which are sWiveled heads at the :lower end of screws 28 which are threaded through the top of the arm containing the back piece referred to. By

setting up the screws the brush may be raised, and by looseningthe screws the brush 7 may be lowered so that its bristles make a closer contact with the floor or surface being scrubbed.- i

When in use, water is permitted to flow 7 by setting the valve within theoutlet 9, and

as'the machine progresses forward and'the entire scrubber rotates, the water passes through the rotating spider between the arms thereof and'falls onto the surface being scrubbed. Here it is carried around by the bristles of the various brushes,;and the band or ring 23 prevents splashing contigu ous objects. If other liquid than water is desired, it may of course be employed. One

only of the main wheels 1 may be loose on the axle 2 so as to permit the machine to be turned; but this detail is well known in many arts and I have not illustrated it. Also, for

domestic use said wheels would probably have rubber tires so that they would not injure the finest floor of any furnitnre With 7 which they come in contact. Otherwise the materials and proportions of parts may Well be left to the manufacturer. I

WVhat is claimed as new is In'a' soinbbing machine, the combination with a tank having a valved outlet pipe in its bottom, it main axle and Wheels; an in- Verted U-shaped frame supporting the tank,

and having bearings in Which said axle is jon'rnaled, means for attachingsaid tank to I said frame, a' disk secured to said frame 'teg'elly depending-fromsaid disk and provided with a bearing for said ax1e,"the end ,Iof seid hanger provided With means for r0- tatebly' carrying a brush, and means provided for rotating said brush.

7 h In testimony .whereof I my signature in presence of tWo Witnesses.

MlCHEAL P. PREGLER. Witnesses r STEPHEN H. Sol-10m; HERMAN P. BURGERT. 

